48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#pragma once
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/**
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* DGUSVPVariable.h
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*
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* Created on: Feb 9, 2019
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* Author: tobi
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*/
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struct DGUS_VP_Variable {
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uint16_t VP;
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void* memadr; // If nullptr, the value cannot be uploaded to the display.
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uint8_t size;
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// Callback that will be called if the display modified the value.
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// nullptr makes it readonly for the display.
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void (*set_by_display_handler)(DGUS_VP_Variable &var, void *val_ptr);
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void (*send_to_display_handler)(DGUS_VP_Variable &var);
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template<typename T>
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DGUS_VP_Variable& operator =(T &o) {
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*(T*)memadr = o; // warning this is not typesafe.
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// TODO: Call out the display or mark as dirty for the next update.
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return *this;
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}
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};
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